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Optical module for preventing cross talk due to undesirable refection light, manufacturing process thereof and electronic device comprising the same

a technology of optical detector and crosstalk, which is applied in the field of optical detector, can solve problems such as the reduction of the sensitivity of optical detector

Active Publication Date: 2018-11-06
ADVANCED SEMICON ENG INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

Significantly reduces or eliminates cross talk, allowing for improved sensitivity and reduced module size and manufacturing complexity, while avoiding the use of costly and polluting printing technologies.

Problems solved by technology

When an optical detector receives a light that is not emitted by the light source of the optical detector and reflected from a proximate object there may be “cross talk,” which can decrease sensitivity of the optical detector.

Method used

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  • Optical module for preventing cross talk due to undesirable refection light, manufacturing process thereof and electronic device comprising the same
  • Optical module for preventing cross talk due to undesirable refection light, manufacturing process thereof and electronic device comprising the same
  • Optical module for preventing cross talk due to undesirable refection light, manufacturing process thereof and electronic device comprising the same

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Embodiment Construction

[0020]Spatial descriptions, such as “above,”“below,”“up,”“left,”“right,”“down,”“top,”“bottom,”“vertical,”“horizontal,”“side,”“higher,”“lower,”“upper,”“over,”“under,” and so forth, are used to describe a certain component or certain plane of a component with respect to the orientation shown in the respective figure(s). It should be understood that the spatial descriptions used herein are for purposes of illustration only, and that practical implementations of the structures described herein can be spatially arranged in any orientation or manner, provided that the merits of embodiments of this disclosure are not deviated by such arrangement.

[0021]FIG. 1A illustrates a cross-sectional view of an optical module. The optical module comprises a light emitting element 11 and a light detector 12, each of which is shown encapsulated by a transparent material. A lid 16 is provided to prevent the light emitted from the light emitting element 11 from reaching a photosensitive area 123 of the li...

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Abstract

The present disclosure relates to an optical module. In an embodiment, the optical module includes a carrier, a light source, a light detector, and a first polarizer. The light source and the light detector are disposed adjacent to a first surface of the carrier. The first polarizer is disposed on the light detector. The optical module is configured to polarize light emitted from the light source into a first polarization direction substantially perpendicular to a second polarization direction of light permitted through the first polarizer.

Description

CROSS-REFERENCE TO RELATED PATENT APPLICATIONS[0001]This application claims the benefit of and priority to P.R.C. (China) Patent Application No. 201410325218.4, filed 9 Jul. 2014, the contents of which are incorporated herein by reference in their entirety.BACKGROUND[0002]1. Technical Field[0003]The present disclosure relates to an optical module, a manufacturing process thereof, and an electronic device comprising the same.[0004]2. Description of the Related Art[0005]An optical module, such as a proximity sensor, may be used to detect an object in proximity to the optical module. The optical module may include a light source and an optical detector, where the optical detector can receive or detect a light emitted from the light source and reflected from an object so that the proximity of the object can be detected.[0006]When an optical detector receives a light that is not emitted by the light source of the optical detector and reflected from a proximate object there may be “cross ...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): G01S7/499H01L31/0232H01S5/026H01L27/144H01L31/18G01S7/481G01S17/02H01S5/183G01S17/04
CPCH01L31/0232G01S7/4813G01S7/499H01L31/18G01S17/026Y02P70/521H01L27/1446H01S5/18355H01L31/02327H01L31/173G01S17/04Y02P70/50
Inventor CHANG, JUNG-HSUANCHEN, YING-CHUNG
Owner ADVANCED SEMICON ENG INC